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| author | Zou Wei <zou_wei@huawei.com> | 2020-04-22 10:58:50 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-04-23 16:32:51 +0200 |
| commit | 15665c062b8c529d162479b306af23bc37bb6a12 (patch) | |
| tree | bf0feb0fe99a705d5d8278e076996a7da107ed9f | |
| parent | 8419759f98adb5a538a40efaf66ebe9d136bc3d4 (diff) | |
| download | linux-15665c062b8c529d162479b306af23bc37bb6a12.tar.gz | |
misc: xilinx_sdfec: Use memdup_user() as a cleanup
Fix coccicheck warning which recommends to use memdup_user(). This patch fixes the following coccicheck warnings: drivers/misc/xilinx_sdfec.c:652:8-15: WARNING opportunity for memdup_user Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Zou Wei <zou_wei@huawei.com> Link: https://lore.kernel.org/r/1587524330-119776-1-git-send-email-zou_wei@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/misc/xilinx_sdfec.c | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/drivers/misc/xilinx_sdfec.c b/drivers/misc/xilinx_sdfec.c index 71bbaa56bdb5..7a7589417e87 100644 --- a/drivers/misc/xilinx_sdfec.c +++ b/drivers/misc/xilinx_sdfec.c @@ -649,14 +649,9 @@ static int xsdfec_add_ldpc(struct xsdfec_dev *xsdfec, void __user *arg) struct xsdfec_ldpc_params *ldpc; int ret, n; - ldpc = kzalloc(sizeof(*ldpc), GFP_KERNEL); - if (!ldpc) - return -ENOMEM; - - if (copy_from_user(ldpc, arg, sizeof(*ldpc))) { - ret = -EFAULT; - goto err_out; - } + ldpc = memdup_user(arg, sizeof(*ldpc)); + if (IS_ERR(ldpc)) + return PTR_ERR(ldpc); if (xsdfec->config.code == XSDFEC_TURBO_CODE) { ret = -EIO; |